Carbon Fiber Sporting Goods
Bola ST 40T DT Swiss 350S Carbon Road Wheelset – 40mm Tubular, Rim Brake, 25/28mm, 1200g
Bola ST 40T DT Swiss 350S Carbon Road Wheelset – 40mm Tubular, Rim Brake, 25/28mm, 1200g
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The Bola ST 40T DT Swiss 350S carbon road wheelset offers a balanced 40mm rim depth and ultra-light 1200g weight, providing efficient aerodynamics and responsive handling for both climbing and endurance road cycling. Certified to EN 14781 and rated for riders up to 100kg, this rim brake tubular wheelset delivers dependable braking and proven durability for competitive athletes and daily riders.
Key Features
- Rim Matrtial:T700/T800,UD Matt
- Rim Depth: 40mm—optimizes aerodynamic drag and crosswind stability for club, sport, and race settings.
- Rim Widths: Available in 25mm or 28mm to support 25c–30c road tires; choose based on ride comfort or aero needs.
- Weight: 1200g ±20g per set (without accessories). Lightweight profile with measurable climbing advantage.
- Brake Type: Rim brake, machined carbon surface for consistent, predictable stopping power.
- Hubset: DT Swiss 350S—proven for long-term reliability and high mileage. Standard 20/24 spoke count (straight-pull).
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Spokes: Sapim CX Ray; front 20 (radial), rear 24 (2 cross)—high strength-to-weight and aerodynamics.
- Certification: EN 14781 test standard, 100kg rider weight rating for verified performance and safety.
- Tubular Construction: For competitive riders prioritizing the lowest rolling mass and precise road feel.
Performance Comparison
| Bola ST 40T DT350S | Aluminum Road Wheels | |
|---|---|---|
| Weight (set) | 1200g ±20g | 1550–1700g |
| Rim Depth | 40mm | 20–25mm |
| Rim Width | 25mm / 28mm | 17–19mm |
| Tire Compatibility | 25c–30c Tubular | 23c–28c Clincher |
Real-World Use Cases
- Competitive road racing: Suitable for sustained efforts and sprints on flat, rolling, or hilly terrain.
- Climbing stages: Low overall mass for improved uphill acceleration.
- Endurance events: Fatigue-reducing weight and crosswind-stable 40mm profile.
- Upgrades: Significant aero and rotational mass reduction over most aluminum wheelsets.
Known Tradeoffs
- Tubular setup: Requires glue/tape and specific tires; preferred by racers for lowest rotating mass.
- Rim brake only: Not compatible with disc brake bikes.
Frequently Asked Questions
Are 40mm carbon wheelsets good for both climbing and flat road cycling?
Yes. The 40mm depth balances aerodynamic efficiency on flats with manageable weight for climbing, making it versatile for various road profiles and weather.
What are the benefits of a 1,200g tubular rim brake wheelset for endurance rides?
A 1,200g tubular set minimizes rotational mass, reducing fatigue and improving acceleration. Tubular construction supports higher pressure, grip, and a refined road feel preferred by endurance cyclists.
How does a 25mm vs 28mm wide carbon road wheelset affect performance?
25mm width offers optimal aerodynamics and compatibility for 25–28c tires, maximizing rolling speed. 28mm supports greater air volume (comfort) and tire stability at lower pressures, which can improve grip and endurance ride quality.
Is a 40mm rim brake carbon wheelset a good upgrade from aluminum wheels?
Switching reduces weight by 300–500g and increases aerodynamic efficiency, especially at higher speeds. Carbon rims also enhance stiffness and ride feel if installed professionally.
Which lightweight road wheelset is best for riders up to 100kg?
This wheelset is tested and certified (EN 14781) for riders up to 100kg, combining reliability and performance with a focus on durability for heavier or high-power cyclists.
